Does anyone know if the 6 speed 540/M5 box shares parts with any other getrag box?
I've been told that it's unrepairable as bmw/getrag do not supply parts, only rebuilds?
I'm getting symptoms of 1/2/5/6 perfect gears - 3 wobbles under load, 4 crashes if you shift into it too quick. After chatting with one of the seasoned bmw techs he's said this is a classic sign of the internal shift mechanism gone up the swanny - however the synchro not working in 4 makes me think there could be a deeper problem.
The bmw tech guy said to throw a shift rebuild kit at it (available from the dealer for about £80) that replaces all the internal shift parts other than the forks. I'm tempted, but would like to know if any of you guys have come across this before!